Pendant setting mechanism



asmgnu. PENDANT SETTING MECHANISM.

' APPLICATION FILED JAN. I7, 1921- Patented Feb. 21, 1922.

1 levers are so minute and mounted so close to UNITED STATES PATENTOFFICE.

EDWARD STAEHLI, OF LA GRANGE, ILLINOIS.

IENDANT SETTING MECHANISM.

Application filed January 17, 1921.

To all whom it may concern:

Be it known that l, Eowenn Sramrm, a citizen of the United States,residing at La Grange, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Pendant SettingMechanism, of which the following. is a full, clear, concise, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification.

My invention relates to pendant setting mechanism for watches and has todo more particularly with an improved and simpli iied mechanism foroperating the clutch wheel by the winding and setting stem, and also forholding the stem in operative relation to the windingand settingmechanism in such a manner that it may be readily re moved therefrom.

Mechanism of this character, and particularly where used in the verysmall watches such as wrist watches and the like, the parts ordinarilyare of very minute construction and so closely mounted on account oflack of space that some of the screws and edges of the plates that it isexceedingly difficult to assemble and disassemble the parts.

One of the features of my invention is the provision of a pendantwinding and setting mechanism of the positive type in which the elementsare sufliciently separated and so mounted that more space is given tothe placing of screws and the use of larger ones than ordinarilyemployed.

Another feature of my invention the provision of a slidably mountedprimary clutch wheel shift bar which is acted upon by the stem to shiftthe clutch wheel and also acts to hold the stem in the watch.

Another feature is the provision of a cam shouldered screw for holdingthe slidably mounted primary bar in operative relation to the stem butwhich screw may be rotated to permit separation of the parts so that thestem may be Withdrawn.

There are other features of my invention but these will be moreparticularly referred to throughout the specification and in theappended claims.

For a better understanding of my invention reference is to be had to theaccompanying drawing in which'- Fig. 1 is a face view showing thepreferred Specification of Letters Eatent.

Patented Feb. 21, 1922.

Serial No. 67,795.

form of my improved pendant winding and setting mechanism with the partsin wind position;

Fig. 2 shows the parts with the stem in setting position;

Fig. 3 shows the slidably mounted primary clutch wheel shift bar pressedout of operaive relation with the stem to permit withdrawal thereof;

Fig. i is a transverse section along the line l-d of 3; and

Fig. 5 is an enlarged view of the cam shouldered screw and primary baror setting cam.

Referring now more in detail to the form of my invention as illustrated,I have shown the main frame 6 of the watch but have left out the usualstandard mechanism employed, showing only the parts immediately involvedin the winding and setting mechanism. The winding and setting stem 7 isalso shown extending r'lownwardly through the usual winding pinion S andclutch wheel 9 to a suitable bearing its lower end. The clutch wheel 9is slidingly carried by the stem and when in its upper position ens thewinding pinion 8 but when in its lower position engages the settingpinion 10, which is of course, connected to the usual gear train to thehands although this not shown. The pinion 8 and clutch wheel 9 are setin suitable recesses so that they will be maintained in proper align-=nt when the stem 7 is withdrawn. The "liltCll wheel 9 has a centralannular groove d by the arm of the secondary shiftl this lever beingmounted in a tween the main frame and the usual ate or bridge piecedepending upon the construction employed. This secondary lever if ispivotally mounted by a screw 12 which with my improved construction maybe spaced a desirable distance from the edge of the frame so as toprovide sufficient stock between the screw and the edge of the frame tomake it of more easy construction. Also by means of my improvedconstruction the screw 12 may be made of larger diameter than heretoforeemployed in setting mechanism of the positive type such as is hereemployed. This is, of course, of great importance where parts are soclosely ass mbled a few thousandths of an inch is In order to mainprovide a spring 13'which acts upon the depending portion of thesecondary lever 11. so as to normally hold the clutch wheel 9 inoperative engagement with the winding pinion 8.

In order to shift the secondary lever 11 so as to move the clutch wheel9 from its winding to its setting position and vice versa, 1 provide aprimary setting bar 14- slida ly mounted upon the frame between theplates of the watch and supported at one end by the pin 15 which extendsthrough a movement limiting slot in the bar 14-, and supported at itsother end by av screw 16 which holds the end it of: the primary bar inoperative relation to the annular slot 7 in the stem '7, so that theshitting of the stem will slidably move the primary bar 1%. I also proide a spring 17 which engages the primary bar 1% under tension. Thisspring 17 serves several purposes. One purpose is to act upon theprimary bar or setting cam so as to effect a snap action of: the stem 7when moved from one position to another. This is brou ht about by thefree end oi the spring 14 engaging the notches in the bar 14las it isshifted from one position to as the movementof the cam 14: is started,as the spring rides over the central portion between the notches, itfalls into the'opposite depression and thus forces the bar it one way orthe other.

Another purpose of the spring 17 is to move the arm 14- out of holdingengagement with the annular groove 7 of the stem. as shown in Fig. 3, soas to permit a withdrawal of the stem. In order to bring this about,screw 16 is turned so that its camshaped poi ion 16 is moved far enoughto permit the spring 1'7 to press the primary bar 14; away from the stemas in and Spring 17 also holds the bar and stem in alternate positions.

In order to operate the secondary lever 11 so as to shift the clutchwheel 9, cooperating cam mechanism on the primary and sec-- ondarylevers is provided, this being preten ably in the form of a cam-Shapedend 4!. carried by the primary bar which engages pin 18 carried by thesecondary lever 11. Thus, when the stem 7 is moved from its windingposition as shown in Fig. 1 to its setting position as shown in Fig. 2,the upward movement of. the primary bar 14: causes the cam 14 to engagethe pin 18 and rotate the secondary lever 11 about its axis 12 so tomove its arm downwardly to shift the clutch wheel 9 into engagement withthe setting pinion 10 as shown in Fig. A reverse movement of the stem 7,that is downwardly or inwardly, will bring about a reverse movement ofthe parts so as to shift the clutch wheel back to its winding positionas shown in Fig. 1.

another. That is, stem 7 and setting hat I claim as new and desire tosecure by U. S. Letters Patent is:

1. A pendant winding and setting mecha nism for watches including astem, a clutch wheel carried by the stem, a primary bar operative'lyengaged by the stem and having a vertical part slidably mounted to oneside thereof, a secondary lever tor shifting the clutch-wheel, and cammechanism carried by said'bar and lever beyond the vertical part of thebar whereby the operation of the primary bar actuates the secondarylever to shift the clutch-wheel.

2. A pendant windin and setting mechanism for watches including a stem,a clutchvwheel carried by the stem, a slidably mounted primary bar'operatively engaged by the stem, means for releasing the primary barfrom the stem to permit withdrawal of the stem, a secondary lever torshitting the clutch-wheel, and cam mechanism carried by said bar andlever whereby the operation ol the primary bar aetuates the secondarylever to shift the clutch-wheel.

A pendant winding and setting mechanism for watches including a stem, aclutchwheel carried by the stem, a slidably mounted primary baroperativcly engaged by the stem, screw ope 'ated means for holding theprimary bar in operative relation to the stem and whereby said means maybe operated to release the primary bar from the stem to pen mitwithdrawal of the stem, at secondary lever for shifting theclutch-wheel, and cam mechanism carried by said bar and lover wherebythe operation of the primary bar actuates the secondary lever to shiftthe clutch-wheel.

at. A pendant winding and setting mechanism for watches including astem, a. primary clutcn-wheel shifbbar slidably mount ed to moveparallel with the stem and in operative relation therewith, a springtending to press the bar out of operative relation to the stem, and anadjustable stop to normally hold the bar and stem in operative relationbut movable to permit said spring to move the bar away whereby the stemmay be withdrawn.

5. A pendant winding and setting mechanism for watches including a stem,a primary clutch-wheel shift-bar slidably mounted to move parallel withthe stem and in operative relation therewith, a spring tendingto pressthe her out of operative relation to the stem, notches in said barcooperative with said spring to effect a snap'action of the stem, and anadjustable stop to normally hold the bar and stem in operative relationbut movable to permit said spring to move the bar away whereby the stemmay be withdrawn.

6. A pendant winding and setting mecha nism for watches including anannularly grooved stem, a primary clutch-wheel shiftbar operativelyrelated to said stem by the stem groove, and means for limiting themovement of the shift-bar to limit the movement of the stem and meanswhereby the shift-bar may be moved laterally away from the stem withoutdismounting same so as to permit withdrawal of the stem.

7. A pendant winding and setting mechanism for watches including anannularly grooved stern and a primary clutch-wheel shift-bar operativelyrelated to said stem by the stem groove and also holding the stemagainst withdrawal, and means whereby the shift-bar may be movedlaterally away from the stem without dismounting same so as to permitwithdrawal of the stem.

8. A pendant winding and setting mechanism for watches including a stem,a main plate and bridgeplate, a primary clutchwheel shift-bar slidablymounted between said plates in operative relation to the stem, and ascrew having a cam-shoulder portion positioned between the plates tohold the bar in operative relation to the stem, said screw beingoperative to release the shift-bar from operative relation to the stem.

9. A pendant winding and setting mechanism for watches including anannularly grooved stem, a primary clutch-wheel shiftbar operativelyrelated to said stem by the stem groove, and means for slidably mountingsaid bar so as to be slidably movable parallel with the stem butpivotally mounted so as to be tiltable away from the stem to permitwithdrawal thereof.

10. A pendant winding and setting mechanism for watches including astem, a clutchwheel carried by the stem, a primary bar operativelyengaged by the stem and having a vertical part slidably mounted to oneside thereof, a secondary lever for shifting the clutch-wheel, and cammechanism carried by said bar and lever beyond the vertical part of thebar whereby the operation of the primary bar actuates the secondarylever to shift the clutch-wheel, and an adjustable stop-screw and springacting to hold primary bar and stem in operative relation but permitseparation of the parts whereby the stem may be withdrawn.

11. A pendant winding and setting mechanism for watches including astem, a clutchwheel carried by the stem, a slidably mount ed primary baroperatively engaged by the stem, a secondary lever for shifting theclutch-wheel and in operative relation with the primary bar, anadjustable cam engaging the bar to normally hold it in operativerelation with the stem but whereby the bar is released from the stemwhen the cam is adjusted so as to permit withdrawal of the stem.

12. A pendant winding and setting mechanism for watches including astem, a clutch wheel carried by the stem, a slidably mounted primary baroperatively engaged by the stem, a secondary lever for shifting theclutch-wheel and in operative relation with the primary bar, anadjustable cam engaging the bar to normally hold it in operativerelation with the stem but whereby the bar is released from the stemwhen the cam is adjusted so as to permit withdrawal of the stem, and aspring pressing said bar against the cam.

13. A pendant winding and setting mechanism for watches including astem, a primary clutch-wheel shaft-bar slidably mounted to move parallelwith the stem and in op erative relation therewith, a spring tending topress the bar out of operative relation to the stem, means on said barcooperative with said spring to effect a snap action of the stem, and anadjustable stop to normally hold the bar and stem in operative relationbut movable to permit said spring to pivotally move the bar away wherebythe stem may be withdrawn.

In witness whereof, I hereunto subscribe my name this 31st day ofDecember A. D.,

EDWARD STAEHLI.

